7 Essential Plumbing Valves
The most common residential plumbing valves include angle valves, ball valves, gate valves, check valves, globe valves, butterfly valves, and pressure-reducing valves. Each serves a different purpose, from basic shut-off to pressure control and backflow prevention.
An angle valve redirects water at a 90-degree angle (often where pipes come from walls), while a straight valve allows water to flow directly in a straight line (typically when pipes come from the floor). Both are used as fixture shut-off valves.
Ball valves are ideal for situations where you need a reliable and quick shut-off. They are highly durable, operate with a simple quarter turn, and are commonly used for main water lines or appliances in both residential and commercial plumbing systems.
A check valve (or backflow preventer) is designed to allow water flow in one direction only. It is often used in sump pumps, irrigation systems, and water tanks to prevent contamination from reverse water flow.
Yes, gate valves are still used but are less common today due to corrosion concerns. They are typically found in older homes or systems that require full open or full closed operation—not for flow regulation.
A pressure-reducing valve (PRV) lowers the incoming water pressure from municipal supply lines to a safe level for home plumbing systems. It helps prevent pipe damage, water waste, and appliance wear.
Yes. Pressure-reducing valves are durable and effective in cold climates like Wisconsin and Minnesota. Proper insulation and professional installation are recommended to prevent freezing.
A stop-and-waste valve is commonly used for outdoor sprinkler systems. It helps drain the line when turned off, preventing freezing during cold weather—a great option for Midwest winters.
The lifespan depends on the valve type and usage:
- Ball/angle valves: 10–20 years
- Gate/globe valves: 8–15 years
- Pressure-reducing valves: up to 10 years
Regular inspection helps extend valve life.
Butterfly valves are more common in commercial or industrial plumbing due to their size and flow control ability. However, they can be used in residential settings where precise water regulation is needed.
You can shop a wide selection of plumbing valves and supplies at First Supply, with local branches throughout Wisconsin, Minnesota, Michigan, Iowa, and Illinois. Visit in-store or online for expert help and fast service.
Yes. State and local plumbing codes may specify the types of valves required for certain installations. Always check with your local plumbing authority or work with licensed professionals.
Use a fixture shut-off valve—either an angle stop or straight valve—found under sinks, behind toilets, or near appliances. A quarter turn usually stops water flow for maintenance or emergency repairs.